89 E30 No Start, Tried everything! [UPDATE]

[e30austin]

Any updates to this?

[Anson]

It still doesn't start. I've run a few tests so here is some additional information for you guys:

I replaced the fusable link in the back with a new 50A fuse.
I used a voltmeter and found that


- I had the power wires that go to the main relay hooked up to a ground before. Hooked them up to power now.
- both terminal 30 and 86 on the main relay have battery voltage
- On the fuel pump relay terminal 30 has battery voltage.
- hooking up the meter in pins 85 and 86 and operating starter shows no results
- if I use a wire and jump the relay on 30 and 87 the pump would operate even with the key off. Next morning I try again and I can't get it to work.

Thanks for looking into this guys - I'm stumped.

[JoeyZ]

Subbed, Im going through this same problem right now. I got on the highway one morning and the car just slowly died out and hasn't ran since. Waiting on new relays and a CPS from BavAuto.

[Anson]

Yeah it's getting ridiculous now. No idea what's wrong haha.

Oh and I also bypassed the obc relay like I was told to.

If there's any other tests you'd like me to do please let me know! I just need an explanation on how to test it as I'm still new to using a multimeter.

[goldenbb]

Subbed, Im going through this same problem right now. I got on the highway one morning and the car just slowly died out and hasn't ran since. Waiting on new relays and a CPS from BavAuto.

The only time I ever had a car do what you describe as "slowly died" is when an alternator went bad and the battery eventually drained such that it could not power the electrics anymore. It is a very bizarre fading out--the dash lights all go dim, headlights dim out, and then the engine just can't run anymore.

This didn't happen to me in a BMW, btw, but it's kind of universal.